Mango fertilizer characteristics and fertilization techniques

one,    Fertilizer characteristics

Mango is rich in nutrients, high in sugar and calories, rich in vitamins A and C , sweet and smooth in flesh, unique in flavor and rich in “tropical fruit king”. Mango requires a large amount of fertilizer. For every 1000 kilograms of fresh mangoes, nitrogen ( N ) is 1.74 kilograms, phosphorus (P2O5) is 0.23 kilograms, and potassium (K2O) is 2.0 kilograms. The most needed is potassium, followed by nitrogen and phosphorus. However, mango trees with different ages, different regions and different yield levels have large differences in fertilizer requirements, and should be applied according to actual conditions.

Second, fertilization technology

1 , flower fertilizer

1 month before flowering of mango flower bud, flower bud before fertilization can promote differentiation. Fertilizer should be based on available nitrogen and potassium fertilizers. The dosage is about 20% of the annual dosage , and 0.3 to 0.5 kg of compound fertilizer per plant .

2 , strong flower fertilizer

Mango tree blossom large, nutrient consumption, once available nitrogen topdressing at anthesis. Fertilization time should be based on tree potential, plant status, and weather. However, it is necessary to fertilize at the right time, and it is advisable to start fertilization when 50% of the last stage branches of the plant are budded. Otherwise, if the tree is booming, the temperature rises, and fertilization too early can induce excessive vegetative shoots or mixed buds to reduce the amount of flowers. Zhuanghuafei can be used with compound fertilizer. Each compound is applied with 0.1 ~ 0.15 kg of compound fertilizer . It can be combined with foliar application of 0.1% borax and 0.1% ~ 0.2% potassium dihydrogen phosphate solution. If the application of the flower fertilizer is sufficient, the plant grows vigorously and may not be applied.

3 , strong fruit fertilizer

About 30 days after Xiehua is the period of rapid growth and development of fruit. During the rapid growth of young fruit, it is necessary to trace the strong fruit fertilizer to meet the nutrient needs of fruit development. Generally, about 0.5 kg of compound fertilizer is applied per plant . It can be combined with foliar fertilization, sprayed with potassium dihydrogen phosphate solution, sprayed to the leaves to fill the water droplets, and the drops are not allowed to drip, continuously sprayed 2 to 3 times, each spraying interval of 7 to 10 days.

4 , before and after fruit picking

Mango has a large amount of fruit and consumes a lot of nutrients. If it is not supplemented with fertilizer in time, it will be difficult to restore the tree potential and affect the sprouting autumn shoots. Fertilization before and after fruit picking is very important, and it is better to apply it twice. For the first time, before and after fruit picking, 0.2 to 0.3 kg of urea per plant and 0.1 to 0.2 kg of potassium chloride can be used to promote the recovery of the tree potential and to sprout the autumn shoots as soon as possible. Fertilization second tip beginning at the last turn green, the buried binding dig weeds, organic fertilizer was applied per 25 to 50 kg, 0.5 kg NPK. The 0.2% potassium dihydrogen phosphate solution can be sprayed 1 to 2 times in combination with the foliage .